A file of signals intelligence reports, messages, and correspondence issued by the Government Code and Cypher School and sent by the head ('C') of the Secret Intelligence Service (MI6) to the Prime Minister, Winston Churchill. This file includes the following reports on North Africa: a German Air Force (GAF) report of June 5; on a shortage of fighters; that the GAF ground forces liaison detachment was withdrawn, because it was inadequate, on June 5; that details of U.S. tanks are to be supplied for Hitler, on June 1; German ground forces' reports for June 1; and of German ground forces operational orders for June 1.